<template>
  <div :class="className" :style="{height:height,width:width}"></div>
</template>

<script>
  import echarts from 'echarts'

  require('echarts/theme/macarons') // echarts theme
  import {debounce} from '@/utils'

  const animationDuration = 6000

  export default {
    name: 'profit-bar-chart',
    props: {
      className: {
        type: String,
        default: 'chart'
      },
      width: {
        type: String,
        default: '100%'
      },
      height: {
        type: String,
        default: '300px'
      },
      xData: Array,
    },
    data() {
      return {
        chart: null
      }
    },
    watch: {
      xData(xData) {
        this.chart.setOption({
          xAxis: [{
            type : 'category',
            data: _(consts.PLATFORM_TYPE).filter(info => info.value !== consts.ALL).map('title').value(),
            silent: false,
            splitLine: {
              show: false
            },
            splitArea: {
              show: false
            }
          }],
          series: [
            {
              type: 'bar',
              data: _(consts.PLATFORM_TYPE).filter(info => info.value !== consts.ALL).map(unit => {
                return _.find(xData, {id: unit.value}).value
              }).value()
            }
          ]
        })
      }
    },
    mounted() {
      this.initChart()
      this.__resizeHanlder = debounce(() => {
        if (this.chart) {
          this.chart.resize()
        }
      }, 100)
      window.addEventListener('resize', this.__resizeHanlder)
    },
    beforeDestroy() {
      if (!this.chart) {
        return
      }
      window.removeEventListener('resize', this.__resizeHanlder)
      this.chart.dispose()
      this.chart = null
    },
    methods: {
      initChart() {
        this.chart = echarts.init(this.$el, 'macarons')

        const series = _(consts.PLATFORM_TYPE).filter(info => info.value !== consts.ALL).map((type) => {
          return {
            name: type.title,
            type: 'bar',
            stack: 'vistors',
            barWidth: '60%',
            data: [],
            animationDuration
          }
        }).value();

        this.chart.setOption({
          tooltip: {
            trigger: 'axis',
            axisPointer: { // 坐标轴指示器，坐标轴触发有效
              type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
            }
          },

          grid: {
            top: 10,
            left: '2%',
            right: '2%',
            bottom: '3%',
            containLabel: true
          },

          yAxis: [
            {
              type: 'value',
              axisTick: {
                show: false
              }
            }
          ],
          series,
        })
      }
    }
  }
</script>
